StacknSplash is a very fast-paced game in which you must move color blocks to create groups of three or more of the same color to eliminate them from the board. To move the blocks you can swap, drag or push them, and new blocks will fall down as you play. The objective of the game is to get all the blocks under the water before the time is over. There is a timer that will run down faster if you take too long to create matches and also the blocks will fall down faster if you don't hurry up. You will see crystal blocks that will give you extra points if you use them to create matches.
The game offers two modes: Regular Game, which is the one I explained before, and Relaxed Game, in which there is no timer, so you an play at your own pace. The Regular game offers three difficulty levels to choose from. The game offers very colorful and attractive graphics, simple sounds, but no music.
In short, if you are looking for a challenging and very fast-paced game to keep you occupied for a while, StacknSplash may be a good choice.